2007 ICD-9-CM Procedure 89.14 Electroencephalogram Recording of electric currents developed in the brain by means of electrodes applied to the scalp, to the surface of the brain, or placed within the substance of the brain. 89.14 is a specific code that can be used to specify a procedure 89.14 contains 2 index entries View the full Volume 3 89.* hierarchy 89.14 excludes: that with polysomnogram (89.17) Index entries containing 89.14: EEG (electroencephalogram) 89.14 monitoring (radiographic) (video) 89.19 Electroencephalogram (EEG) 89.14 monitoring (radiographic) (video) 89.19